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q horsepower



 
 
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  #1  
Old April 28th 08, 08:47 AM posted to rec.aviation.aerobatics
Euro-Motors
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Posts: 1
Default q horsepower

Is the horsepower the same from an airplane as like from a
motorcycle?
if yes i wonder why airplane engines are still so big to
produce 100 hp against 100 horsepoer from a motorcyle
regards
willy


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  #2  
Old April 28th 08, 11:04 AM posted to rec.aviation.aerobatics
NoSpam
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Posts: 11
Default q horsepower

Euro-Motors wrote:
Is the horsepower the same from an airplane as like from a
motorcycle?
if yes i wonder why airplane engines are still so big to
produce 100 hp against 100 horsepoer from a motorcyle
regards
willy


Un-geared aircraft engines turn the prop directly so the prop tip speed
becomes the limiting factor. The tip of a 6 foot prop turning at 2700RPM
is travelling at about 580mph. To get the power at low RPM you need a
big engine (or a gearbox).

Dave
  #3  
Old May 19th 08, 12:25 AM posted to rec.aviation.aerobatics
neha
external usenet poster
 
Posts: 1
Default q horsepower

Euro-Motors wrote:
Is the horsepower the same from an airplane as like from a
motorcycle?
if yes i wonder why airplane engines are still so big to
produce 100 hp against 100 horsepoer from a motorcyle
regards
willy


Horse power from big cubic inches is very reliable horse power, horse
power from high RPM is a bit more fickle.
 




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